Benchmarking.md

Fastify

Benchmarking

Benchmarking is important if you want to measure how a change can affect the performance of your application. We provide a simple way to benchmark your application from the point of view of a user and contributor. The setup allows you to automate benchmarks in different branches and on different Node.js versions.

The modules we will use:

• Autocannon: A HTTP/1.1 benchmarking tool written in node.
• Branch-comparer: Checkout multiple git branches, execute scripts and log the results.
• Concurrently: Run commands concurrently.
• Npx: NPM package runner used to run scripts against different Node.js Versions and execute local binaries. Shipped with npm@5.2.0.

Simple

Run the test in the current branch

npm run benchmark

Run the test against different Node.js versions ✨

npx -p node@10 -- npm run benchmark

Advanced

Run the test in different branches

branchcmp --rounds 2 --script "npm run benchmark"

Run the test in different branches against different Node.js versions ✨

branchcmp --rounds 2 --script "npm run benchmark"

Compare current branch with main (Gitflow)

branchcmp --rounds 2 --gitflow --script "npm run benchmark"

or

npm run bench

Run different examples

branchcmp --rounds 2 -s "node ./node_modules/concurrently -k -s first \"node ./examples/asyncawait.js\" \"node ./node_modules/autocannon -c 100 -d 5 -p 10 localhost:3000/\""